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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Boost leak.....log inside 3rd gear pull



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      04-13-2011, 02:09 PM   #1
jetblack07
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Boost leak.....log inside 3rd gear pull

Here's a log of a 3rd gear pull with jb3 newest firmware on map 5 with 93 oct and dci....in mexico of course. Does this look like a boost leak to you guys or something else? What do I do to fix this? It does the same thing in map 3 also.
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Last edited by jetblack07; 04-13-2011 at 02:33 PM..
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      04-13-2011, 02:22 PM   #2
Clap135
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That does not look like a leak. That looks like your tune is overshooting or has trouble with boost control and is reverting back to stock boost.
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      04-13-2011, 02:33 PM   #3
jetblack07
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How do I fix it?
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      04-13-2011, 02:39 PM   #4
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I would reload the firmware to rule out a bad firmware update...Did it do this with the older maps and firmware?
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      04-13-2011, 03:34 PM   #5
jetblack07
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Yeah did it since I installed the jb3 about a week ago.
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      04-13-2011, 08:07 PM   #6
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Update...switched to map 4 and not having any issues. must have been the lagfix map.
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